SE9403155L - Förfarande för ozonblekning av vedmassa - Google Patents

Förfarande för ozonblekning av vedmassa

Info

Publication number: SE9403155L
Authority: SE; Sweden
Prior art keywords: wood pulp; ozone; bleaching; pulp; ozone bleaching
Prior art date: 1993-09-21

Application number

SE9403155A

Other languages

English (en)

Swedish (sv)

Other versions

SE9403155D0 (sv

Inventor

Lewis D Shackford

Original Assignee

Ingersoll Rand Co

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1993-09-21

Filing date

1994-09-21

Publication date

1995-03-22

1994-09-21 Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co

1994-09-21 Publication of SE9403155D0 publication Critical patent/SE9403155D0/xx

1995-03-22 Publication of SE9403155L publication Critical patent/SE9403155L/xx

Links

CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title abstract 5
238000004061 bleaching Methods 0.000 title abstract 5
229920001131 Pulp (paper) Polymers 0.000 title abstract 3
238000000034 method Methods 0.000 title abstract 2
239000012159 carrier gas Substances 0.000 abstract 2
239000007789 gas Substances 0.000 abstract 2
238000007599 discharging Methods 0.000 abstract 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

SE9403155A 1993-09-21 1994-09-21 Förfarande för ozonblekning av vedmassa SE9403155L (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US12473793A	1993-09-21	1993-09-21

Publications (2)

Publication Number	Publication Date
SE9403155D0 SE9403155D0 (sv)	1994-09-21
SE9403155L true SE9403155L (sv)	1995-03-22

Family

ID=22416576

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9403155A SE9403155L (sv)	1993-09-21	1994-09-21	Förfarande för ozonblekning av vedmassa

Country Status (3)

Country	Link
AT (1)	AT403704B (de)
CA (1)	CA2132165A1 (de)
SE (1)	SE9403155L (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI981808A7 (fi) *	1998-08-24	2000-02-25	Arbozon Oy Ltd	Menetelmä massan valkaisemiseksi

1994
- 1994-09-15 CA CA002132165A patent/CA2132165A1/en not_active Abandoned
- 1994-09-21 SE SE9403155A patent/SE9403155L/xx not_active Application Discontinuation
- 1994-09-21 AT AT0178894A patent/AT403704B/de not_active IP Right Cessation

Also Published As

Publication number	Publication date
AT403704B (de)	1998-05-25
ATA178894A (de)	1997-09-15
SE9403155D0 (sv)	1994-09-21
CA2132165A1 (en)	1995-03-22

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Legal Events

Date	Code	Title	Description
1999-07-12	NAV	Patent application has lapsed	Ref document number: 9403155-6